Enhanced Water Quality Protection in Florida: An Analysis of the Regulatory and Practical Significance of an Outstanding Florida Water Designation

The Outstanding Florida Water (OFW) designation is the highest protection offered to a body of water by the state of Florida and is available only to those waters whose “natural attributes” warrant it. An OFW designation provides that water body with an antidegradation standard for certain activities affecting its water quality. Ordinarily, waters in Florida must meet the criteria established by rule for their respective class of water (based on the Florida water body classification system), regardless of existing water quality. Once a water body is designated as an OFW, however, a baseline water quality standard is set based on the ambient water quality of that particular water body. Because the OFW water quality standard may be higher than the rule-based water quality classification criteria, regulated activities that may affect the OFW are subject to additional scrutiny by regulatory agencies. In addition, those activities not necessarily occurring within an OFW, but that may “significantly degrade” an OFW, are subject to heightened scrutiny. The ability of current OFW regulation to fulfill the legislative intent behind the OFW designation remains uncertain. Judicial and administrative case law addressing OFWs provide little clear guidance in interpreting the statutory standards for the issuance of permits in or affecting OFWs, especially the “clearly in the public interest” standard. The Florida Department of Environmental Protection (FDEP) should consider adopting for the OFW Program the type of public interest benefits/costs balancing test currently provided for in Aquatic Preserves Program rules. This test creates a discernible distinction between the public interest standard for submerged lands activities that are within aquatic preserves as opposed to those occurring outside of the preserves. The effect of the OFW designation on water quality parameters subject to a narrative standard (nutrients), and on water quality parameters that are not currently established by rule (e.g. emerging pathogens of concern) has not been established. In addition OFWs do not appear to enjoy any special consideration as designated uses subject to impaired waters restoration. The definitions of non-degradation and of ambient water quality for the purposes of OFW designation should be amended to ensure that they contemplate degradation by contaminants other than the current rule–based list of water quality standards and criteria. The extent to which Best Management Practices (BMPs) for silviculture operations are sufficient to safeguard OFW water quality may require further research. In addition, the extent to which the OFW statute and rules recognize the ecological role and recreational value of riparian zones remains in question. This should be clarified by the FDEP

A comparison of the seasonal movements of tiger sharks and green turtles provides insight into their predator-prey relationship

During the reproductive season, sea turtles use a restricted area in the vicinity of their nesting beaches, making them vulnerable to predation. At Raine Island (Australia), the highest density green turtle Chelonia mydas rookery in the world, tiger sharks Galeocerdo cuvier have been observed to feed on green turtles, and it has been suggested that they may specialise on such air-breathing prey. However there is little information with which to examine this hypothesis. We compared the spatial and temporal components of movement behaviour of these two potentially interacting species in order to provide insight into the predator-prey relationship. Specifically, we tested the hypothesis that tiger shark movements are more concentrated at Raine Island during the green turtle nesting season than outside the turtle nesting season when turtles are not concentrated at Raine Island. Turtles showed area-restricted search behaviour around Raine Island for ~3–4 months during the nesting period (November–February). This was followed by direct movement (transit) to putative foraging grounds mostly in the Torres Straight where they switched to area-restricted search mode again, and remained resident for the remainder of the deployment (53–304 days). In contrast, tiger sharks displayed high spatial and temporal variation in movement behaviour which was not closely linked to the movement behaviour of green turtles or recognised turtle foraging grounds. On average, tiger sharks were concentrated around Raine Island throughout the year. While information on diet is required to determine whether tiger sharks are turtle specialists our results support the hypothesis that they target this predictable and plentiful prey during turtle nesting season, but they might not focus on this less predictable food source outside the nesting season

Pneumococcal carriage in sub-Saharan Africa--a systematic review.

BACKGROUND: Pneumococcal epidemiology varies geographically and few data are available from the African continent. We assess pneumococcal carriage from studies conducted in sub-Saharan Africa (sSA) before and after the pneumococcal conjugate vaccine (PCV) era. METHODS: A search for pneumococcal carriage studies published before 2012 was conducted to describe carriage in sSA. The review also describes pneumococcal serotypes and assesses the impact of vaccination on carriage in this region. RESULTS: Fifty-seven studies were included in this review with the majority (40.3%) from South Africa. There was considerable variability in the prevalence of carriage between studies (I-squared statistic = 99%). Carriage was higher in children and decreased with increasing age, 63.2% (95% CI: 55.6-70.8) in children less than 5 years, 42.6% (95% CI: 29.9-55.4) in children 5-15 years and 28.0% (95% CI: 19.0-37.0) in adults older than 15 years. There was no difference in the prevalence of carriage between males and females in 9/11 studies. Serotypes 19F, 6B, 6A, 14 and 23F were the five most common isolates. A meta-analysis of four randomized trials of PCV vaccination in children aged 9-24 months showed that carriage of vaccine type (VT) serotypes decreased with PCV vaccination; however, overall carriage remained the same because of a concomitant increase in non-vaccine type (NVT) serotypes. CONCLUSION: Pneumococcal carriage is generally high in the African continent, particularly in young children. The five most common serotypes in sSA are among the top seven serotypes that cause invasive pneumococcal disease in children globally. These serotypes are covered by the two PCVs recommended for routine childhood immunization by the WHO. The distribution of serotypes found in the nasopharynx is altered by PCV vaccination